Bests & Worsts Reviews from Amazon

I bought it bought because of all positive reviews. The other brands similar chargers reviews mention that these "smart charger" types are unable to charge a completely discharged battery. The reviews for this one did not mention it so I assumed this one is capable of this very important charger feature. IT IS NOT. So beware if you for example left the door partially open by mistake the door light will drain the battery completely and this charger is useless. In my case I had to use the jump cable to start the car and let the alternator charge the battery for half an hour, then this charger can pick up the job. So beware that you may got stuck even having the "charger" available. My old cheap traditional charger did charge drained battery just fine and it did not have a computer in it :)